/*html{height: 100%}*/
/*body{margin: 0;height: 100%;*/
/*    background: #ffffff;*/
/*}*/
canvas{display: flex;width: 100%;height: 800px;}
.mainbody{
    width: 99%;
    background: transparent;
    /* display: flex;
    justify-content: center; */
    height: 100%;
    line-height:100%;
    /*top: 0;*/
    position: absolute;
    top: 10%;
    /*font-size: 50px;*/
}